docs: initial product docs and design reference

Establishes the documentation foundation for the netOrk website:

- CLAUDE.md — tech stack (React 18/Vite/Tailwind), design rules, tone of
  voice, and file structure guidance for the implementation instance
- docs/PRODUCT.md — one-liner, elevator pitch, target audience, value props,
  full feature list, driver table, architecture summary
- docs/DESIGN.md — exact Tailwind classes for colors, typography, spacing,
  and all reusable component patterns (cards, buttons, screenshot frames,
  badges, nav) lifted directly from the product UI
- docs/PAGES.md — page-by-page content plan with route, purpose, section
  structure, and draft copy for every page

No code yet — that follows in a separate instance.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -0,0 +1 @@
+node_modules/\ndist/\n.env\n.env.local\n*.local\n.DS_Store